描述 Description

The MIC33M350 is a high-efficiency, low-voltage input, 3A Continuous current synchronous step-down Power Module. The Constant-ON-Time (COT)control architecture with HyperLight Load? provides very high efficiency atlight loads, while still having ultra-fast transient response.The MIC33M350 output voltage is set by two VSEL (Voltage Selection) pins, up to nine different values. This method eliminates the need for an external feedback resistor divider and improves the output voltage setting accuracy.?The 2.4V to 5.5V input voltagerange, low shutdown and quiescent currents make the MIC33M350 ideal forsingle-cell Li-Ion battery-powered applications. The 100% duty cycle capabilityprovides low dropout operation, extending operating range in portable systems. The MIC33M350 pinout iscompatible with the MIC33M356 I2C-based programmable regulator version, suchthat applications can be easily converted. An open-drain Power Good output isprovided to indicate when the output voltage is within 9% of regulation andfacilitates the interface with an MCU, or power sequencing. If set in shutdown(EN=GND), the MIC33M350 typically draws 1.5 μA, while the output is dischargedthrough 10 ohm pull-down. The MIC33M350 is available in athermally efficient, 24 Lead 3mm x 4.5mm x 1.8mm thin QFN package, withan operating junction temperature range from –40°C to +125°C.

簡介

MIC33M350屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器。由制造生產(chǎn)的MIC33M350穩(wěn)壓器 - DC-DC 開關穩(wěn)壓器DC-DC 開關穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設備，用于需要穩(wěn)定 DC 輸入電壓和/或?qū)⑵滢D(zhuǎn)換為不同幅度的輸出電壓的應用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關元件，設備提供的電力會通過該元件。